Double boiler.



R. B. SMITH.

DOUBLE BOILER. v APPLICATION flLED JUNE H). 1918.

1,283,580. 7 Patented N 0v. 5, 1918.

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s PATENT OFFICE- I RUFUS B. SMITH, OF AKRON, OHIO.

DOUBLE BOILER.

Ipeclfication of Letters Patent.

Patented Nov. 5, 1918.

Application filed J'une 10, 1918. Serial No. 239,260.

To all whom it may concern:

Be it known that I, Euros B. SMITH, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Double Boilers; and do here y declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in double boilers for household use, and consists of an eflicient device of this nature so arran d as to revent the drying up of the materlal in the inner boiler near the top, and afiording means for expeditiously and thoroughly cooking the contents of the receptacle.

The invention consists of a simple and efiicient device of this nature having various details of construction, combinations and arrangements of parts which will be hereinafter full described, shown in the accompanying rawings and then specifically defined in the appended claim.

My invention is illustrated in the accompanying drawings which, with the letters of reference marked thereon, form a part of this application and in which:

- Figure 1 is a central vertical sectional view through the boiler.

Fig. 2 is a detailed view of the outer boiler.

Fig. 3 is a detail of the inner boiler, and

Fig. 4 is a detail of the lid.

Reference now being had to the details of the drawings by letter:

A designates an outer boiler made of any suitable material and provided with a shoulder C above which latter the outer boiler has an enlarged area, the latter being provided with a suitable handle E. An inner boiler F of smaller diameter than the outer boiler, within which it is adapted to be positioned, has a flanged portion H with a horizontally disposed portion'I forming a closure for the space between the body of the inner boiler and the vertically disposed portion of the flange, which latter rests upon the shoulder of the outer boiler.

It will be noted upon reference to Fig. 1

of the drawings, that an annular space intervenes between the portion of the wall between the outer boiler and that portion of the flange which rests upon the shoulder thereof, through which space steam, generating within the outer boiler, may make exit to the atmosphere. A lid has a shouldered portion adapted to engage the upper end of the inner boiler, and has'notches T to receive the handle N which is fastened to the horizontally disposed portion of the flange of the inner boiler.

By the provision of a double boiler made in accordance with my invention, it will be noted that the contents of the inner recep-' tacle will cook much more satisfactorily and more expeditiously than with the usual type of double boiler and by reason of the downwardly projecting flange 0n the inner receptacle, the space'intervening between the same and the wall of the inner receptacle beneath is smaller causing steam to collect and tend to prevent the drying of the material near the top of the inner receptacle while being cooked.

What I claim to be new is:

A double boiler, comprising an outer receptacle with a shouldered portion a slight distance above the vertical center thereof, the portion of the receptacle above said shoulder being of larger diameter than the portion below the shoulder, an inner receptacle having at its upper end an outwardly extending flange at right angles thereto, which flange has a downwardly extending portion substantially the length of the outer receptacle above its shouldered portion and adapted to rest upon the shoulder of the outer receptacle and spaced apart a slight distance from the wall of the latter above the shoulder, to afiord an exit for steam to the atmosphere, a fixed handle secured to the horizontally disposed portion of said flange of the inner receptacle, and a lid engaging the open end of the inner receptacle, and having notches for the reception of said handle.

In testimony whereof I hereunto afli-x my signature in presence of two witnesses.

RUFUS B. SMITH.

Witnesses:

C. BLAKE MCDOWELL, THo uAs G. Som. 

